/*
 ******************************************************************************
 * @file    read_14bit_fifo_module.c
 * @author  Sensors Software Solution Team
 * @brief   This file show the simplest way to get data from sensor.
 *
 ******************************************************************************
 * @attention
 *
 * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
 * All rights reserved.</center></h2>
 *
 * This software component is licensed by ST under BSD 3-Clause license,
 * the "License"; You may not use this file except in compliance with the
 * License. You may obtain a copy of the License at:
 *                        opensource.org/licenses/BSD-3-Clause
 *
 ******************************************************************************
 */

/*
 * This example was developed using the following STMicroelectronics
 * evaluation boards:
 *
 * - STEVAL_MKI109V3 + STEVAL-MKI174V1
 * - NUCLEO_F401RE + STEVAL-MKI174V1
 * - DISCOVERY_SPC584B + STEVAL-MKI174V1
 *
 * Used interfaces:
 *
 * STEVAL_MKI109V3    - Host side:   USB (Virtual COM)
 *                    - Sensor side: SPI(Default) / I2C(supported)
 *
 * NUCLEO_STM32F401RE - Host side: UART(COM) to USB bridge
 *                    - Sensor side: I2C(Default) / SPI(supported)
 *
 * DISCOVERY_SPC584B  - Host side: UART(COM) to USB bridge
 *                    - Sensor side: I2C(Default) / SPI(supported)
 *
 * If you need to run this example on a different hardware platform a
 * modification of the functions: `platform_write`, `platform_read`,
 * `tx_com` and 'platform_init' is required.
 *
 */

/* STMicroelectronics evaluation boards definition
 *
 * Please uncomment ONLY the evaluation boards in use.
 * If a different hardware is used please comment all
 * following target board and redefine yours.
 */

//#define STEVAL_MKI109V3  /* little endian */
//#define NUCLEO_F401RE    /* little endian */
//#define SPC584B_DIS      /* big endian */

/* ATTENTION: By default the driver is little endian. If you need switch
 *            to big endian please see "Endianness definitions" in the
 *            header file of the driver (_reg.h).
 */


#if defined(STEVAL_MKI109V3)
/* MKI109V3: Define communication interface */
#define SENSOR_BUS hspi2
/* MKI109V3: Vdd and Vddio power supply values */
#define PWM_3V3 915

#elif defined(NUCLEO_F401RE)
/* NUCLEO_F401RE: Define communication interface */
#define SENSOR_BUS hi2c1

#elif defined(SPC584B_DIS)
/* DISCOVERY_SPC584B: Define communication interface */
#define SENSOR_BUS I2CD1

#endif
/* Includes ------------------------------------------------------------------*/
#include <string.h>
#include <stdio.h>
#include "lis2ds12_reg.h"

#if defined(NUCLEO_F401RE)
#include "stm32f4xx_hal.h"
#include "usart.h"
#include "gpio.h"
#include "i2c.h"

#elif defined(STEVAL_MKI109V3)
#include "stm32f4xx_hal.h"
#include "usbd_cdc_if.h"
#include "gpio.h"
#include "spi.h"
#include "tim.h"

#elif defined(SPC584B_DIS)
#include "components.h"
#endif

/* Private macro -------------------------------------------------------------*/
#define    BOOT_TIME         20 //ms

/* Private variables ---------------------------------------------------------*/
static int16_t data_raw_acceleration[3];
static float_t magnitude[30];
static uint8_t tx_buffer[1000];

static uint8_t whoamI, rst;

/* Extern variables ----------------------------------------------------------*/

/* Private functions ---------------------------------------------------------*/
/*
 *   WARNING:
 *   Functions declare in this section are defined at the end of this file
 *   and are strictly related to the hardware platform used.
 *
 *
 */
static int32_t platform_write(void *handle, uint8_t reg, const uint8_t *bufp,
                              uint16_t len);
static int32_t platform_read(void *handle, uint8_t Reg, uint8_t *Bufp,
                             uint16_t len);
static void tx_com( uint8_t *tx_buffer, uint16_t len );
static void platform_delay(uint32_t ms);
static void platform_init(void);

uint16_t samples, fail;

/* Main Example --------------------------------------------------------------*/
/*
 * @brief  This file shows the simplest way to get data from sensor.
 */
void lis2ds12_14bit_module(void)
{
  /* Initialize platform specific hardware */
  platform_init();
  /* Wait sensor boot time */
  platform_delay(BOOT_TIME);
  /* Initialize mems driver interface. */
  stmdev_ctx_t dev_ctx;
  dev_ctx.write_reg = platform_write;
  dev_ctx.read_reg = platform_read;
  dev_ctx.mdelay = platform_delay;
  dev_ctx.handle = &SENSOR_BUS;
  /*
   *  Check device ID.
   */
  whoamI = 0;
  lis2ds12_device_id_get(&dev_ctx, &whoamI);

  if ( whoamI != LIS2DS12_ID )
    while (1); /*manage here device not found */

  /*
   *  Restore default configuration.
   */
  lis2ds12_reset_set(&dev_ctx, PROPERTY_ENABLE);

  do {
    lis2ds12_reset_get(&dev_ctx, &rst);
  } while (rst);

  /* Enable Block Data Update. */
  lis2ds12_block_data_update_set(&dev_ctx, PROPERTY_ENABLE);
  /* Set full scale. */
  lis2ds12_xl_full_scale_set(&dev_ctx, LIS2DS12_4g);
  /* Configure filtering chain. */
  /* Accelerometer - High Pass / Slope path */
  //lis2ds12_xl_hp_path_set(&dev_ctx, LIS2DS12_HP_ON_OUTPUTS);
  /* Module processing enable. */
  lis2ds12_module_sens_set(&dev_ctx, PROPERTY_ENABLE);
  /* Module routine result is send to FIFO */
  lis2ds12_fifo_xl_module_batch_set(&dev_ctx, PROPERTY_ENABLE);
  /* FIFO mode selection: FIFO_MODE */
  lis2ds12_fifo_mode_set(&dev_ctx, LIS2DS12_FIFO_MODE);
  /* FIFO watermark level selection. */
  lis2ds12_fifo_watermark_set(&dev_ctx, 10);
  /* Select the signal that need to route on int1 pad. */
  lis2ds12_pin_int1_route_t pin1;
  pin1.int1_6d = 0;
  pin1.int1_drdy = 0;
  pin1.int1_ff = 0;
  pin1.int1_fss7 = 0;
  pin1.int1_fth = 0;
  pin1.int1_master_drdy = 0;
  pin1.int1_s_tap = 0;
  pin1.int1_tap = 0;
  pin1.int1_wu = 0;
  lis2ds12_pin_int1_route_set(&dev_ctx, pin1);
  /* Select the signal that need to route on int2 pad. */
  lis2ds12_pin_int2_route_t pin2;
  pin2.int2_boot = 0;
  pin2.int2_drdy = 0;
  pin2.int2_fth = 0;
  pin2.int2_sig_mot = 0;
  pin2.int2_step_det = 0;
  pin2.int2_tilt = 0;
  lis2ds12_pin_int2_route_set(&dev_ctx, pin2);
  /* Set Output Data Rate. Maximum ODR supported is 800Hz */
  lis2ds12_xl_data_rate_set(&dev_ctx, LIS2DS12_XL_ODR_100Hz_HR);
  fail = 0;

  /* Read samples in polling mode (no int). */
  while (1) {
    uint8_t i, j;
    uint8_t fifo_ths_flag;
    uint8_t fifo_full_flag;
    /* Read fifo when is full. */
    lis2ds12_fifo_wtm_flag_get(&dev_ctx, &fifo_ths_flag);
    lis2ds12_fifo_full_flag_get(&dev_ctx, &fifo_full_flag);

    if (fifo_ths_flag) {
      HAL_Delay(500);
      /* Read acceleration data. */
      //memset(data_raw_acceleration.u8bit, 0x00, 3*sizeof(int16_t));
      lis2ds12_fifo_data_level_get(&dev_ctx, &samples);
      //lis2ds12_read_reg(&dev_ctx,  LIS2DS12_OUT_X_L, (uint8_t*) acceleration_mg, 256 * 3);
      j = 0;

      for (i = 0; i < 10; i++) {
        lis2ds12_acceleration_raw_get(&dev_ctx, data_raw_acceleration);
        magnitude[j++] = lis2ds12_from_fs4g_to_mg(data_raw_acceleration[0]);
        snprintf((char *)tx_buffer, sizeof(tx_buffer), "Acceleration [mg]:%4.2f\r\n",
                magnitude[j - 1]);
        tx_com( tx_buffer, strlen( (char const *)tx_buffer ) );
        magnitude[j++] = lis2ds12_from_fs4g_to_mg(data_raw_acceleration[1]);
        snprintf((char *)tx_buffer, sizeof(tx_buffer), "Acceleration [mg]:%4.2f\r\n",
                magnitude[j - 1]);
        tx_com( tx_buffer, strlen( (char const *)tx_buffer ) );
        magnitude[j++] = lis2ds12_from_fs4g_to_mg(data_raw_acceleration[2]);
        snprintf((char *)tx_buffer, sizeof(tx_buffer), "Acceleration [mg]:%4.2f\r\n",
                magnitude[j - 1]);
        tx_com( tx_buffer, strlen( (char const *)tx_buffer ) );
      }

      /* FIFO mode selection: FIFO_MODE */
      lis2ds12_fifo_mode_set(&dev_ctx, LIS2DS12_BYPASS_MODE);
      /* FIFO mode selection: FIFO_MODE */
      lis2ds12_fifo_mode_set(&dev_ctx, LIS2DS12_FIFO_MODE);
    }
  }
}


/*
 * @brief  Write generic device register (platform dependent)
 *
 * @param  handle    customizable argument. In this examples is used in
 *                   order to select the correct sensor bus handler.
 * @param  reg       register to write
 * @param  bufp      pointer to data to write in register reg
 * @param  len       number of consecutive register to write
 *
 */
static int32_t platform_write(void *handle, uint8_t reg, const uint8_t *bufp,
                              uint16_t len)
{
#if defined(NUCLEO_F401RE)
  HAL_I2C_Mem_Write(handle, LIS2DS12_I2C_ADD_L, reg,
                    I2C_MEMADD_SIZE_8BIT, (uint8_t*) bufp, len, 1000);
#elif defined(STEVAL_MKI109V3)
  HAL_GPIO_WritePin(CS_up_GPIO_Port, CS_up_Pin, GPIO_PIN_RESET);
  HAL_SPI_Transmit(handle, &reg, 1, 1000);
  HAL_SPI_Transmit(handle, (uint8_t*) bufp, len, 1000);
  HAL_GPIO_WritePin(CS_up_GPIO_Port, CS_up_Pin, GPIO_PIN_SET);
#elif defined(SPC584B_DIS)
  i2c_lld_write(handle,  LIS2DS12_I2C_ADD_L & 0xFE, reg, (uint8_t*) bufp, len);
#endif
  return 0;
}

/*
 * @brief  Read generic device register (platform dependent)
 *
 * @param  handle    customizable argument. In this examples is used in
 *                   order to select the correct sensor bus handler.
 * @param  reg       register to read
 * @param  bufp      pointer to buffer that store the data read
 * @param  len       number of consecutive register to read
 *
 */
static int32_t platform_read(void *handle, uint8_t reg, uint8_t *bufp,
                             uint16_t len)
{
#if defined(NUCLEO_F401RE)
  HAL_I2C_Mem_Read(handle, LIS2DS12_I2C_ADD_L, reg,
                   I2C_MEMADD_SIZE_8BIT, bufp, len, 1000);
#elif defined(STEVAL_MKI109V3)
  reg |= 0x80;
  HAL_GPIO_WritePin(CS_up_GPIO_Port, CS_up_Pin, GPIO_PIN_RESET);
  HAL_SPI_Transmit(handle, &reg, 1, 1000);
  HAL_SPI_Receive(handle, bufp, len, 1000);
  HAL_GPIO_WritePin(CS_up_GPIO_Port, CS_up_Pin, GPIO_PIN_SET);
#elif defined(SPC584B_DIS)
  i2c_lld_read(handle, LIS2DS12_I2C_ADD_L & 0xFE, reg, bufp, len);
#endif
  return 0;
}

/*
 * @brief  Write generic device register (platform dependent)
 *
 * @param  tx_buffer     buffer to transmit
 * @param  len           number of byte to send
 *
 */
static void tx_com(uint8_t *tx_buffer, uint16_t len)
{
#if defined(NUCLEO_F401RE)
  HAL_UART_Transmit(&huart2, tx_buffer, len, 1000);
#elif defined(STEVAL_MKI109V3)
  CDC_Transmit_FS(tx_buffer, len);
#elif defined(SPC584B_DIS)
  sd_lld_write(&SD2, tx_buffer, len);
#endif
}

/*
 * @brief  platform specific delay (platform dependent)
 *
 * @param  ms        delay in ms
 *
 */
static void platform_delay(uint32_t ms)
{
#if defined(NUCLEO_F401RE) | defined(STEVAL_MKI109V3)
  HAL_Delay(ms);
#elif defined(SPC584B_DIS)
  osalThreadDelayMilliseconds(ms);
#endif
}

/*
 * @brief  platform specific initialization (platform dependent)
 */
static void platform_init(void)
{
#if defined(STEVAL_MKI109V3)
  TIM3->CCR1 = PWM_3V3;
  TIM3->CCR2 = PWM_3V3;
  HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_1);
  HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_2);
  HAL_Delay(1000);
#endif
}
